CN209782750U - Air supplementing ventilator of range hood - Google Patents
Air supplementing ventilator of range hood Download PDFInfo
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- CN209782750U CN209782750U CN201822179712.0U CN201822179712U CN209782750U CN 209782750 U CN209782750 U CN 209782750U CN 201822179712 U CN201822179712 U CN 201822179712U CN 209782750 U CN209782750 U CN 209782750U
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Abstract
The utility model discloses an air supplementing ventilator of a smoke exhaust ventilator, which comprises a ventilator and an electric control box, wherein the input end of the electric control box is connected with an external power supply; the first output end of the electric control box is electrically connected with the ventilator; the electric control box comprises a plug, a socket, an AC220V-DC24V power supply module and an electric control unit; the input end of the AC220V-DC24V power supply module is connected with the plug, and the output end of the power supply module is connected with the electric control unit; the electric control unit comprises a voltage transformation circuit, a current acquisition circuit, a comparison circuit and a control switch; the input end of the current acquisition circuit is connected with the socket, and the output end of the current acquisition circuit is connected with the input end of the comparison circuit; the output end of the comparison circuit is connected with the control switch; the control switch is a relay; and an output switch of the relay is connected with the ventilator. Realize smoke ventilator tonifying wind ventilator and the synchronous break-make of smoke ventilator in the true sense, can discern smoke ventilator's oil pumping state and non-smoke extraction state, the condition of the malfunction of ventilator can not appear when smoke ventilator is in non-smoke extraction state.
Description
Technical Field
The utility model relates to a building ventilation unit especially involves a smoke ventilator mends wind ventilator.
background
The range hood is a kitchen appliance for purifying the kitchen environment, is arranged above a kitchen range, can quickly pump away waste burnt by the range and oil fume harmful to human bodies generated in the cooking process, and discharges the waste and the oil fume to the outside to reduce pollution and purify air, and becomes a standard configuration of modern kitchens. Because the kitchen can have the oil smoke problem in the use, so general people can close the door and window that kitchen and other rooms or sitting room communicate when using the kitchen. If the kitchen is in a relatively closed space without air exchange with the outside, the kitchen can be in a negative pressure state when the range hood works, and the sewer can generate reverse odor at the time, so that the environment of the kitchen can be polluted; the effect of the hood is also deteriorated in the case of negative pressure. Therefore, an air supply device is required when the range hood is in operation, but the air supply device should not be operated when the range hood is not in operation, and excessive air exchange between the kitchen and the outside should not be performed. Because the external air quality is not good, if the kitchen communicates with the outside for a long time, a large amount of dust can deposit in the kitchen, and this is not good to this kind of place of depositing edible material in the kitchen, if the kitchen is in the environment that air quality is very poor, people can cause certain health problem to the human body if using the food that this kitchen cooks for a long time.
Chinese patent application No. CN201220291442.2 discloses an automatic air supply system for kitchen range hood, which comprises a range hood, an air pipe is arranged near the range hood, one end of the air pipe is communicated with the outside, an air valve is arranged at the other end of the air pipe, the air valve is connected with a controller, the input end of the controller is connected with a power supply of the range hood, and the output end of the controller is connected with the air valve. The automatic air supplement system of the kitchen range hood can drive the air valve to act when the range hood is powered on, so that an air supplement effect is formed. However, if the range hood has a multifunctional function and has non-oil smoke extraction functions such as standby and illumination besides the oil smoke extraction function, the controller described in the patent cannot distinguish whether the range hood is in the oil smoke extraction state or the non-oil smoke extraction state, and can only detect whether the range hood is in the power-on state, which may cause that when the range hood is in the non-oil smoke extraction state, such as the standby state and the illumination state, the controller can also detect that current flows through, and the air valve is also in the open state; people need to disconnect the air valve and must disconnect the power supply for the range hood, and people's use habit is generally that the work that only can close range hood can not pull out range hood's plug from the socket, and this will lead to the air valve to mend the wind always, and the kitchen is in the malleation state, and when people used up the kitchen and opened the door of kitchen with the sitting room intercommunication, the kitchen probably had not discharged clean oil smoke completely and can irritate the sitting room and pollute the sitting room. When people supply power to the range hood, the air valve is opened, and the range hood is not in a working state at the time. Patent application No. CN201220291442.2 discloses an automatic air supply system for a kitchen range hood, which cannot distinguish whether the range hood is in a cooking fume extraction state or a non-cooking fume extraction state, and cannot realize real synchronization between the range hood and air supply.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome shortcoming and not enough among the prior art, provide a smoke ventilator mends wind ventilator, need not destroy smoke ventilator, can with the smoke ventilator linkage of any brand on the market, can really realize ventilator and smoke ventilator's synchronous working.
The utility model discloses a realize through following technical scheme: an air supplementing ventilator of a range hood comprises the ventilator and an electric control box, and particularly, the electric control box comprises an input end and two output ends; the input end of the electric control box is connected with an external power supply; the first output end of the electric control box is electrically connected with the ventilator; the electric control box comprises a plug, a socket and an electric control unit; the plug is the input end of the electric control box; the socket is the second output end of the electric control box; the input end of the AC220V-DC24V power supply module is connected with a plug, and the output end of the power supply module is connected with an electric control unit; the electric control unit comprises a voltage transformation circuit, a current acquisition circuit, a comparison circuit and a control switch; the input end of the current acquisition circuit is connected with the socket, and the output end of the current acquisition circuit is connected with the input end of the comparison circuit; the output end of the comparison circuit is connected with the control switch; the control switch is a relay; and an output switch of the relay is connected with the ventilator.
As an alternative, the current obtaining circuit includes a current transformer and an amplifying circuit.
Furthermore, the primary side of the current transformer is connected with the second output end of the electric control box; the secondary side of the current transformer is connected with the input end of the amplifying circuit; and the output end of the amplifying circuit is connected with the input end of the comparing circuit.
As an alternative, the comparison circuit further comprises a set point adjustment circuit.
Further, the set point adjusting circuit comprises an adjustable resistor R1.
As an alternative, the transformer circuit inputs DC24V and outputs ± DC12V and DC 5V; the +/-DC 12V output by the voltage transformation circuit is connected to the power supply end of the current acquisition circuit; the DC5V output by the voltage transformation circuit is connected to the power supply end of the comparison circuit.
as an alternative, the ventilator comprises an electric motor and a damper; the output shaft of the motor is connected with the air door.
Further, the output switch of the relay is connected with the motor.
As an alternative, an indicator lamp is installed on the ventilator; when the ventilator is in an on state, the indicator light is on; when the ventilator is in the off state, the indicator light is off.
As one optional scheme, the set comparison current value of the comparison circuit is 0-2A.
Smoke ventilator mend wind ventilator have following beneficial effect:
1. The synchronous on-off of the air supplementing ventilator of the smoke exhaust ventilator and the smoke exhaust ventilator can be really realized, the oil smoke extraction state and the non-oil smoke extraction state of the smoke exhaust ventilator can be identified, and the condition of misoperation of the ventilator when the smoke exhaust ventilator is in the non-oil smoke state can not occur;
2. The synchronous action of the air supplementing ventilator of the range hood and the range hood is realized in the true sense, and the internal circuit of the range hood cannot be damaged;
3. The comparison circuit of the air supplementing ventilator of the range hood comprises a set value adjusting circuit, can adjust the comparison value set by the comparison circuit, and can be suitable for almost all range hoods with different powers in the market.
Drawings
Fig. 1 is a schematic view of the present invention;
FIG. 2 is a logic flow diagram of the electronic control unit of the present invention;
Fig. 3 is a comparison circuit of the present invention;
Fig. 4 is a setting value adjusting circuit of the present invention;
Fig. 5 is a voltage transformation circuit of the present invention;
Fig. 6 is a current acquisition circuit of the present invention.
Brief description of the drawings: 1-a ventilator; 2-an electric control box; 3-a plug; 4-output end one; 5-a socket; 6-AC220V-DC24V power supply module; 7-an electronic control unit; 8-output switch of relay; 9-an indicator light; 10-current transformer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following describes in detail specific embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
As shown in fig. 1 and fig. 2, the ventilator for supplementing air to a range hood comprises a ventilator 1 and an electric control box 2, particularly, one input end and two output ends of the electric control box 2 are respectively a first output end 4 and a second output end; the input end of the electric control box 2 is connected with an external 220V power supply; the output end I4 of the electric control box 2 is electrically connected with the ventilator 1, and the output end I4 of the electric control box 2 comprises a 24V power supply output and a signal output for controlling the ventilator 1 to be opened or closed; and the second output end of the electric control box 2 is electrically connected with the range hood, and the second output end of the electric control box 2 outputs a 220V power supply to the range hood. The electric control box 2 is connected with an external power supply through a plug 3, then supplies power to the range hood and the ventilator 1 respectively, and controls the on-off of the ventilator 1.
Further, the electric control box 2 comprises a plug 3, a socket 5 and an electric control unit 7; the plug 3 is the input end of the electric control box 2, and the electric control box 2 obtains electric energy through the connection of the plug 3 and an external socket; the socket 5 is the second output end of the electric control box 2, and the socket 5 of the electric control box 2 supplies power to the range hood. The input end of the AC220V-DC24V power module 6 is connected with the plug 3 through a wire, and the AC220V-DC24V power module 6 supplies power from the AC220V voltage of the plug 3 of the electric control box 2. The AC220V-DC24V power module 6 down-rectifies the AC220V voltage to a DC24V voltage, and then outputs the DC24V voltage to the electronic control unit 7 through its output terminal. The electric control unit 7 of the electric control box 2 is connected with the socket 5 in parallel. The electric control box 2 obtains a power supply from the outside through the plug 3 of the electric control box, and the electric control box is connected with the range hood through the socket 5 to supply power to the range hood, so that the range hood is not damaged in the power supply mode, and the plug 3 of the range hood is only inserted into the socket 5 of the electric control box 2 to get power; the electric control box 2 supplies power to the electric control unit 7 through the AC220V-DC24V power supply module 6 by voltage reduction and rectification.
The electric control unit 7 comprises a voltage transformation circuit, a current acquisition circuit, a comparison circuit and a control switch; the input end of the current acquisition circuit is connected with the socket 5 so as to acquire a current value output to the range hood by the electric control box 2, namely the current value, the output end of the current acquisition circuit is connected with the input end of the comparison circuit, and the acquired current value is input into the comparison circuit for comparison; the output end of the comparison circuit is connected with the control switch, and after the comparison circuit compares the acquired current parameter passing processing with the preset value, if the acquired current parameter passing processing is larger than the preset value, the comparison circuit outputs a low level to the control switch; otherwise, a high level is output. The control switch is a relay, and an output switch 8 of the relay is connected with the ventilator 1. After the relay acquires the low level output by the output circuit, an output switch 8 of the relay is closed, the circuit is in an access state at the moment, the ventilator 1 is opened, and the ventilator 1 is in an open ventilation state; after the relay acquires the high level output by the output circuit, the output switch 8 of the relay is switched off, the circuit is in an open circuit state at the moment, the ventilator 1 is closed, and the ventilator 1 is in a closed and non-ventilation state.
For further implementation, the current obtaining circuit comprises a current transformer 10 and an amplifying circuit; the primary side of the current transformer 10 is connected with the second output end of the electric control box 2 and is used for measuring the current of the second output end of the electric control box 2 (namely the current output by the electric control box to the smoke exhaust ventilator); the secondary side of the current transformer 10 is connected with the input end of the amplifying circuit, and the current which is measured by the current transformer 10 and flows through the electric control box 2 is input into the amplifying circuit; after the input current value is processed by the amplifying circuit, the output end of the amplifying circuit outputs a signal to the input end of the comparing circuit so that the comparing circuit can compare the signal with a preset value.
Preferably, the comparison circuit further includes a set value adjustment circuit by which a preset value of the comparison circuit can be adjusted.
preferably, the set point adjusting circuit adjusts the preset value of the comparing circuit by adjusting the resistance value of the adjustable resistor R1. The means for adjusting the preset value of the comparison circuit through the adjustable resistor is simple and easy to realize; in addition, the adjustable resistor can be externally connected with a rotary button, so that the preset value of the comparison circuit can be directly adjusted through adjusting the rotary button, and the method is simple and effective.
The input voltage of the input end of the voltage transformation circuit is DC24V, and meanwhile, voltages +/-DC 12V and DC5V are output; the +/-DC 12V output by the voltage transformation circuit is connected to the power input end of the current acquisition circuit to supply power to the power acquisition circuit; DC5V output by the voltage transformation circuit is connected to the power input end of the comparison circuit to supply power to the comparison circuit.
Wherein the ventilator 1 comprises an electric motor and a damper; the output shaft of the motor is connected with the air door, and the open and close control mode of the ventilator 1 is a common means of those in the field, and is not a main technical difference in the scheme, so that the detailed description is omitted.
wherein, the output switch 8 of the relay is connected with the circuit of the motor, and the on-off of the output switch 8 of the relay controls the positive and negative rotation of the motor, thereby controlling the on-off of the ventilator 1.
Preferably, an indicator lamp 9 is installed on the ventilator 1, the indicator lamp 9 is connected in a circuit of the ventilator 1, and when an output switch 8 of a relay is closed, namely the ventilator 1 is in an open state, the indicator lamp 9 is on; when the output switch 8 of the relay is turned off, the indicator light 9 is turned off when the ventilator 1 is in the off state.
Preferably, the set comparative current value of the comparison circuit is 0-2A, and the set comparative current value can meet the rated operation current values of almost all range hoods with various powers in the market.
one specific implementation is provided in conjunction with fig. 3-6. The main working process of the air supplementing ventilator 1 of the range hood is as follows: the external power supply, the AC220V-DC24V power module 6 and the transformer circuit are responsible for supplying the range hood, the amplifier circuit, the comparator circuit and the ventilator 1 with the power it needs. The current transformer 10 obtains the working current of the range hood, converts the working current into a voltage signal through the amplifying circuit, and inputs the voltage signal into the comparison circuit, the comparison circuit compares the voltage signal with a preset voltage comparison value, if the voltage signal is smaller than the preset voltage value, the comparison circuit outputs a high level to control the ventilator 1 to be closed, otherwise, the comparison circuit outputs a low level to control the ventilator 1 to be opened; therefore, the synchronous opening and closing of the range hood and the ventilator 1 are really realized. The ventilator 1 comprises a shell, an air door, a stepping motor and a driving circuit, wherein the stepping motor controls the opening and closing of the air door; the driving circuit controls the motor to rotate forward and backward so as to control the opening and closing of the air door, an indicator lamp 9 is arranged on the driving circuit, the indicator lamp 9 is controlled by an output signal of the driving circuit, and the indicator lamp 9 is lightened when the driving circuit controls the motor to rotate forward; otherwise the indicator light 9 is not lit. The AC220V-DC24V power supply module 6 is a BT20W-24V power supply module, and can rectify AC220V voltage into DC 24V. The comparison circuit shown in fig. 3 is formed by a single chip microcomputer chip U4 with model STC12C5201AD and a peripheral circuit thereof, the output end of the comparison circuit is connected with a relay K1, when the comparison circuit outputs a low level, the relay is electrified, an output switch K1 of the relay is closed, a driving circuit controls the motor of the ventilator 1 to rotate forwards, an air door connected with a rotating shaft of the motor through a coupler is opened, the ventilator 1 is in an open state, and an indicator light 9 on the driving circuit is on; the comparison circuit outputs high level, the relay loses power, an output switch K1 of the relay is disconnected, the driving circuit controls the motor of the ventilator 1 to reversely rotate, an air door connected with a rotating shaft of the motor through a coupler is closed, the ventilator 1 is in a closed state, and meanwhile an indicator lamp 9 on the driving circuit is not on. As shown in fig. 4, the set point adjusting circuit includes an adjustable resistor R1, and a terminal REF-V of the set point adjusting circuit is connected to a pin 13 of the comparing circuit, so that the set comparison value of the comparing circuit can be adjusted by adjusting the resistance of the adjustable resistor R1. As shown in fig. 5, the power input terminal of the transformer circuit is connected to the output terminal of the AC220V-DC24V power module 6; the transformation circuit inputs DC24V voltage, generates +/-DC 12V voltage through a U1(79M12) voltage stabilizing chip and a peripheral circuit, and outputs the +/-DC 12V voltage to the current acquisition circuit; meanwhile, the + DC12V power supply generates a +5V power supply through a U2(78M05) voltage stabilizing chip and a peripheral circuit, and the +5V power supply is output to a power supply input end of a comparison circuit and supplies power to a control system of the comparison circuit, which takes a U4 singlechip as a core; the output end CON2 of the transformer circuit is electrically connected to the ventilator 1, and provides a 24V dc voltage power supply to the ventilator 1. The current obtaining circuit shown in fig. 6 includes a feedthrough current transformer T1 of model HWCT 5A/5mA and an amplifying circuit, the primary side of the current transformer 10 is connected with an input terminal CON2, the CON2 of the current transformer 10 is connected with the electronic control box 2 and the second output terminal to obtain the current of the range hood, specifically, the primary side coil of the current transformer 10 is sleeved on the live wire of the second output terminal, and the secondary side of the current transformer 10 is connected with the amplifying circuit to output the measured current to the amplifying circuit. When the working current of the range hood generates current on the secondary side of a current transformer T1, a current signal passes through an operational amplifier circuit formed by U3(OP07) to generate a voltage U (U is i R3), the voltage U is rectified and filtered by D1 and C7 to generate a smooth DC voltage analog signal, the signal and the current of the range hood are in a proportional linear relation, the voltage signal (IV-in) is transmitted to a pin 12 of a singlechip U4 of a comparison circuit connected with the voltage signal, the voltage signal is compared with a preset voltage, and if the voltage signal is smaller than the preset voltage value, the comparison circuit outputs a high level; otherwise, the low level is output. The power supply input of the U3(0P07) of the amplifying circuit is the voltage of +/-DC 12V output by the transforming circuit.
The present invention is not limited to the above-described embodiment, and various modifications and variations of the present invention are also intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a smoke ventilator mends wind ventilator, includes ventilator and automatically controlled box, its characterized in that: the electric control box comprises an input end and two output ends; the input end of the electric control box is connected with an external power supply; the first output end of the electric control box is electrically connected with the ventilator; the electric control box comprises a plug, a socket, an AC220V-DC24V power supply module and an electric control unit; the plug is the input end of the electric control box; the socket is the second output end of the electric control box; the input end of the AC220V-DC24V power supply module is connected with a plug, and the output end of the power supply module is connected with an electric control unit; the electric control unit comprises a voltage transformation circuit, a current acquisition circuit, a comparison circuit and a control switch; the input end of the current acquisition circuit is connected with the socket, and the output end of the current acquisition circuit is connected with the input end of the comparison circuit; the output end of the comparison circuit is connected with the control switch; the control switch is a relay; and an output switch of the relay is connected with the ventilator.
2. The range hood air supplement ventilator of claim 1, wherein: the current acquisition circuit comprises a current transformer and an amplifying circuit.
3. The range hood air supplement ventilator of claim 2, wherein: the primary side of the current transformer is connected with the second output end of the electric control box; the secondary side of the current transformer is connected with the input end of the amplifying circuit; and the output end of the amplifying circuit is connected with the input end of the comparing circuit.
4. The range hood air supplement ventilator of claim 1, wherein: the comparison circuit further comprises a set value adjusting circuit.
5. The range hood air supplement ventilator of claim 4, wherein: the set point adjustment circuit includes an adjustable resistor R1.
6. The range hood air supplement ventilator of claim 1, wherein: the transformation circuit inputs DC24V and outputs + -DC 12V and DC 5V; the +/-DC 12V output by the voltage transformation circuit is connected to the power supply end of the current acquisition circuit; the DC5V output by the voltage transformation circuit is connected to the power supply end of the comparison circuit.
7. The range hood air supplement ventilator of claim 1, wherein: the ventilator comprises a motor and a damper; the output shaft of the motor is connected with the air door.
8. The range hood air supplement ventilator of claim 7, wherein: and an output switch of the relay is connected with the motor.
9. the range hood air supplement ventilator of claim 1, wherein: an indicator lamp is arranged on the ventilator; when the ventilator is in an on state, the indicator light is on; when the ventilator is in the off state, the indicator light is off.
10. A range hood air supplement ventilator according to any of claims 1 to 9 wherein: the set comparison current value of the comparison circuit is 0-2A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822179712.0U CN209782750U (en) | 2018-12-24 | 2018-12-24 | Air supplementing ventilator of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822179712.0U CN209782750U (en) | 2018-12-24 | 2018-12-24 | Air supplementing ventilator of range hood |
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| Publication Number | Publication Date |
|---|---|
| CN209782750U true CN209782750U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822179712.0U Active CN209782750U (en) | 2018-12-24 | 2018-12-24 | Air supplementing ventilator of range hood |
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| CN (1) | CN209782750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442525A (en) * | 2018-12-24 | 2019-03-08 | 广州市住邦建材发展有限公司 | A kind of smoke exhaust ventilator benefit wind ventilator |
-
2018
- 2018-12-24 CN CN201822179712.0U patent/CN209782750U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442525A (en) * | 2018-12-24 | 2019-03-08 | 广州市住邦建材发展有限公司 | A kind of smoke exhaust ventilator benefit wind ventilator |
| CN109442525B (en) * | 2018-12-24 | 2023-12-05 | 广州市住邦建材发展有限公司 | Air supplementing ventilator of smoke exhaust ventilator |
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